body {
  background: #00003d;
}
body .banner {
  width: 100%;
  height: 500px;
  background: url(../img/top_pic.png) no-repeat center center;
}
body .history {
  width: 100%;
  overflow: hidden;
}
body .history .historyMain {
  width: 1240px;
  margin: 0 auto;
  overflow: hidden;
  position: relative;
}
body .history .historyMain .title {
  display: table;
  margin: 0 auto;
  height: 45px;
}
